/Engine/Plugins/Experimental/Animation/CurveExpression/Source/Runtime/Public/ExpressionEvaluator.h
Evaluate an expression directly and returns the result. If the expression is incorrectly formed, then the optional return value holds nothing.
[TOptional](API\Runtime\Core\IO\TOptional)< float > Evaluate ( FStringView InExpression, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< [TOptional](API\Runtime\Core\IO\TOptional)< float >([FName](API\Runtime\Core\UObject\FName) InConstantName)> InConstantEvaluator ) const